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Letters PatentNo. 82,248, dated September 15, 18,68.

IMPROVEMENT IN BRIGK-KILNS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, S. D. RADER, of Williamsport, in the county ofLycoming, and State of Pennsylvania, have invented certain new anduseful Improvements in Brick-Kiln; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings,- and to the letters of referencemarked thereon, which form a part of this specification, and in whichFigure 1 is a perspective view, and

Figure 2 is a plan view.

The nature of my invention consists in the construction of a series offurnaces along the sides of a brickkiln, and one at each end, by whichnot only is a great saving in time and fuel effected, but the heat isequalized throughout the whole kiln, thereby producing brick of uniformhardness, and superior in quality to those burnt in the ordinary manner.I

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation.

A represents a brick-kiln, built in any of the known and usual ways,with a series of openings, a a, through the sides of the same, nearitsbottom. I

These openings, in ordinary kilns, are used as furnaces for receivingthe fuel and generating the heat by which the mass of brick above are tobe burned to the proper degree of hardness.

I do not use the openings at ,a for that purpose, but I construct onelong furnace, B, along each side of the kiln, dividing these longfurnaces into smaller ones, gg, by partitions 6 11, which partitions donot, however, extend as high up as the arched top of the furnace B, butonly part of the way, being placed under the openings a win the kiln.

The gratings c c are placed crossways, and the openings at d to thefurnaces, through which the fuel is put in, as well as the openings e eto the ash-pits, underneath the grating, are all provided with doors.

Thefurna'ccs B B are provided with a series of openings, z'z',corresponding in position with, that is, are opposite to, the openingsat a in the kiln, but smaller in size, and the object of these openingsis to introduce currents of air, and drive the flame and heat into theopenings a a. The doors to the furnaces may be closed after the fuel isreceived, or partly closed, as draught is required, as the openings 71i'supply air enough to maintain combustion. The furnaces B B are furtherprovided, at each end, with a similar opening, 2'.

At each end of the kiln A, and in the centre thereof, is anotherfurnace, C, which supplies heat to an arch running across the kiln,crossways of the arches in setting the'brick. This also gives draughtfor the long furnaces for the middle of the kiln.

In setting up the brick in the kiln, after the arch is formed, I set thethird row from thewalls close together all around the kiln, and all theway upto the platting, so as to keep the beat out to the walls, and thenthe brick. will burn hard to the walls, and to the top of the kiln.

The middle arch can be dispensed with, but in that case the kiln must beless inwidth between the long furnaces.

This kind of kiln is adapted for burning red brick, fire-brick, tiles,or crockery, or for any other purpose to which the common kiln can beapplied. i

It is also admirably adapted for drying purposes.

I am aware that a patent has been granted to E. W. Binghani, for abrick-kiln, dated June 23, 1868, somewhat similar to my invention, and Itherefore disclaim the devices or combination of devices contained insaid patent; but I What I do claim as my invention, and desire to secureby Letters Patent, is-

The arrangement of the kiln A, end-furnaces O, and long side-furnaces B,composed of a series of small fireplaces o o o, and provided withdraught-holes 2'2, at the side and ends, all constructed substantiallyas and for the purposes herein set forth.

In testimony that I claim the foregoing as my own, I afli x my signaturein presence of two witnesses.

S. D. RADER.

Witnesses:

T. H. ALEXANDER, J. W. MISTER.

